Name: PGSITF Purpose: set image transfer function Category: GRAPHICS File: pgplot.src Author: T.J. Pearson Use: see description below. Description: SUBROUTINE PGSITF (ITF) INTEGER ITF Set the Image Transfer Function for subsequent images drawn by PGIMAG, PGGRAY, or PGWEDG. The Image Transfer Function is used to map array values into the available range of color indices specified with routine PGSCIR or (for PGGRAY on some devices) into dot density. Argument: ITF (input) : type of transfer function: ITF = 0 : linear ITF = 1 : logarithmic ITF = 2 : square-root Updates: Oct 16, 1998: JPT automatically extracted from source.